> Do we still have the bug where a test that finishes first, but is from a
> later cset (say a later cset IMPROVES Ts by 4% or more) would make us
> think we regressed it on an earlier cset if that earlier talos run
> finishes later?
>
> Such that we set graph points by the time the test finished, not time
> the push was, etc.

https://bugzilla.mozilla.org/show_bug.cgi?id=688534

On Thu, Oct 18, 2012 at 6:26 PM, Justin Wood (Callek) <cal...@gmail.com> wrote:
> Ehsan Akhgari wrote:
>> Hi everyone,
>>
>> As part of our efforts to get more value out of the Talos test suite for
>> preventing performance regressions, we believe that we are now ready to put
>> a first set of measures against startup time regressions.  We will start by
>> imposing a new backout policy for mozilla-inbound checkins for regressions
>> more than 4% on any given platform.  If your patch falls in a range which
>> causes more than 4% Ts regression, it will be backed out by our sheriffs
>> together with the rest of the patches in that range, and you can only
>> reland after you fix the regression by testing locally or on the try server.
>>
>> The 4% threshold has been chosen based on anecdotal evidence on the most
>> recent Ts regressions that we have seen, and is too generous, but we will
>> be working to improve the reporting and regression detection systems
>> better, and as those get improved, we would feel more comfortable with
>> imposing this policy on other Talos tests with tighter thresholds.
>>
>> Please let me know if you have any questions.
>>
>
> Do we still have the bug where a test that finishes first, but is from a
> later cset (say a later cset IMPROVES Ts by 4% or more) would make us
> think we regressed it on an earlier cset if that earlier talos run
> finishes later?
>
> Such that we set graph points by the time the test finished, not time
> the push was, etc.
>
> ~Justin Wood (Callek)
>
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> dev-platform mailing list
> dev-platform@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-platform
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